Canon 5D Mk II Dark Spot Issue

Canon has announced that they are looking into the black spot issue on the new Canon 5D Mark II.
We have learned that some users of the Canon EOS 5D Mark II digital SLR camera have identified two types of image quality phenomena that appear under certain shooting conditions.

* “Black dot” phenomenon (the right side of point light sources becomes black)
* Vertical banding noise

We are currently investigating and analysing the causes, and examining measures to reduce or eliminate these phenomena by providing correction firmware. An announcement will be made on www.canon-europe.com as soon as measures have been determined.


A solution for the banding problem found on Northlight Images site:
Vertical banding noise If the recording format is set to sRAW1, vertical banding noise may become visible depending on the camera settings, subject, and background. The following camera settings can reduce the phenomenon.
  • Set the recording format to RAW or JPEG.
  • Set C.Fn II-3: Highlight tone priority to 0: Disable if the recording format is set to sRAW1.
  • The vertical banding noise is not noticeable if the recording format is set to sRAW2, but please set C.Fn II-3: Highlight tone priority to 0: Disable if you are concerned about noise.


Links
CNET.com: Canon working on 'black dot' fix for new SLR
This article has the best pictures I've seen illustrating the problem.

DPReview: Canon statement

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